Three-layer linear sieve

Abstract

The utility model discloses a three-layer linear screen, and relates to the technical field of screening equipment. The feeding device comprises a shell, a feeding assembly is arranged on one side of the top of the shell, and an anti-blocking assembly is further arranged on the upper portion of the inner side of the shell. And the feeding assembly comprises a mounting frame fixedly connected to a feeding opening in the top of the shell, a movable frame is movably connected to the interior of the mounting frame in the longitudinal direction, and a feeding pipe is fixedly connected to the interior of the movable frame. The feeding hopper is driven by the L-shaped frame and the first lead screw in the feeding assembly to do linear reciprocating motion on the mounting frame in the longitudinal direction, materials are evenly conveyed to the uppermost screen through the feeding hopper, and the problem that in the prior art, the materials are prone to being accumulated at the first position of the screen is solved; and meanwhile, a dredging pipe is driven by a moving plate and a second lead screw to move in the shell in the transverse direction, high-pressure air flow or high-pressure water flow is conveyed to the screen through a telescopic hose and the dredging pipe, and the problem that in the prior art, the blocked screen cannot be automatically dredged conveniently is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening equipment, in particular to a three-layer linear screen. Background Art

[0002] Screening equipment refers to the general term for equipment used to classify materials according to their particle size or weight. It can be mainly divided into three types: fixed screen, rolling screen and vibrating screen. Among them, vibrating screen can be divided into linear vibrating screen, horizontal vibrating screen, swing screen, eccentric screen, etc., and linear vibrating screen is the most common vibrating screen, generally referred to as linear screen, which has the advantages of low energy consumption, high output, simple structure and easy maintenance.

[0003] The existing document with announcement number CN219292042U discloses a three-layer linear vibrating screen, including a receiving slot, a motor 1 is fixedly connected to the front side of the outer wall of the receiving slot, an output end of the motor 1 passes through the receiving slot and is fixedly connected to a rotating rod 1, and a rear end of the rotating rod 1 is fixedly connected to an arc slot;

[0004] However, it still has the following disadvantages in actual use:

[0005] In the above-mentioned three-layer linear vibrating screen, an arc groove is installed inside the storage groove through a rotating rod, and a plurality of holes are arranged on the inner wall of the arc groove. A filter plate is installed inside the storage groove through a slide groove. The material is preliminarily screened through the arc groove and sent to the filter plate for filtering and screening. However, during use, it is not convenient to evenly transport the material to the filter plate, resulting in the material being easily accumulated at one place on the filter plate, affecting its filtering and screening efficiency.

[0006] The above-mentioned three-layer linear vibrating screen has an arc groove installed inside its storage groove through a rotating rod, the inner wall of the arc groove is provided with a plurality of holes, and a filter plate is installed inside the storage groove through a slide groove. The material is preliminarily screened through the arc groove and sent to the filter plate for filtering and screening. However, during use, it lacks a structure for automatically clearing the filter plate and other screening structures, resulting in the need to take out and clean the filter plate and other screening structures after they are blocked, which makes it inconvenient to inspect and maintain them.

[0007] To this end, we provide a three-layer linear screen to solve the above problems. Utility Model Content

[0008] The purpose of the utility model is to provide a three-layer linear screen, which drives the upper hopper to perform linear reciprocating motion in the longitudinal direction on the installation frame through the L-shaped frame and the first screw rod in the feeding assembly, and evenly transports the material to the uppermost screen through the upper hopper, thereby solving the problem that the existing material is easily accumulated in one place on the screen. At the same time, the dredging pipe is driven by the movable plate and the second screw rod to move horizontally inside the outer shell, and high-pressure airflow or high-pressure water flow is transported to the screen through the telescopic hose and the dredging pipe, thereby solving the problem that it is inconvenient to automatically dredge the blocked screen.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a three-layer linear screen, comprising a shell, a feeding component is arranged on one side of the top of the shell, and an anti-blocking component is also arranged on the upper inner side of the shell;

[0011] The feeding assembly includes a mounting frame fixedly connected to the feeding port at the top of the shell, a movable frame movably connected to the inside of the mounting frame along the longitudinal direction, a feeding pipe fixedly connected to the inside of the movable frame, a feeding hopper fixedly connected to the top of the feeding pipe, an L-shaped frame fixedly connected to the outer walls on both sides of the upper hopper, a first screw rod rotatably connected to the outer walls on both sides of the mounting frame through a first mounting seat, a first slider threadedly sleeved on the first screw rod, and a top of the first slider fixedly connected to the bottom of the horizontal arm of the L-shaped frame;

[0012] The anti-clogging component includes a telescopic hose passing through the upper outer wall of one side of the shell, one end of the telescopic hose located on the inner side of the shell is fixedly connected to a dredging pipe through a rotating joint, and a plurality of nozzles are fixedly connected to the dredging pipe along its axial direction at equal intervals, and a mounting sleeve is provided on the outer side of the end of the dredging pipe away from the rotating joint, and a connecting rod is welded to the top of the mounting sleeve, and the top of the connecting rod movably passes through the top of the shell and is fixedly connected to a movable plate, and the top of the shell is rotatably connected to a second screw rod, and a second slider is threadedly sleeved on the second screw rod, and the top of the second slider is welded to the center position of the lower surface of the movable plate.

[0013] The utility model is further configured as follows: a vibration motor is fixedly connected to the front end surface of the shell, a plurality of screens are fixedly connected to the inside of the shell at equal intervals from top to bottom, a plurality of discharge shells are penetrated through the outer wall of one side of the shell at equal intervals from top to bottom, a feed port of the discharge shell is fixedly connected to one end of the screen, and a discharge pipe is fixedly connected to the bottom of the discharge shell.

[0014] The utility model is further configured as follows: support components are arranged around the bottom of the shell, the support components include multiple bottom plates located around the bottom of the shell, support columns are welded on the upper surfaces of the bottom plates, the tops of the support columns movably penetrate a movable rod, a piston plate is welded on one end of the movable rod located on the inner side of the support column, a connecting plate is welded on one end of the movable rod located on the outer side of the support column, the upper surfaces of the connecting plates are respectively fixedly connected to the bottom of the shell, a buffer spring is sleeved on the outer side of the movable rod, and the two ends of the buffer spring are respectively fixedly connected to the top of the support column and the lower surface of the connecting plate.

[0015] The utility model is further configured as follows: a liquid inlet pipe is fixedly connected to the lower part of the outer wall of one side of the support column, and a liquid inlet valve is fixedly connected to one end of the liquid inlet pipe away from the support column.

[0016] The utility model is further configured as follows: dust covers are fixedly connected to the front and rear end surfaces of the movable frame, one end of the dust cover away from the movable frame is fixedly connected to the front and rear end surfaces on the inner side of the installation frame, grooves are opened on the inner walls on both sides of the installation frame, and protrusions are movably connected inside the grooves, and one end of the protrusion located outside the groove is respectively welded to the outer walls on both sides of the movable frame.

[0017] The utility model is further configured as follows: installation rods are welded on the upper and lower sides of the outer walls on both sides of the upper hopper, and one end of the installation rod away from the upper hopper passes through the vertical support arm of the L-shaped frame and is threadedly sleeved with a fastening nut.

[0018] The utility model is further configured as follows: a first drive motor is fixedly connected to the front end surface of the mounting frame via a first motor frame, the output shaft of the first drive motor and the front end of the first screw rod are both sleeved with synchronous wheels, and the synchronous wheels are connected via a synchronous belt transmission.

[0019] The utility model is further configured as follows: a plurality of positioning holes are provided at equal intervals along the circumference of one end of the clearing pipe away from the rotating joint, a U-shaped frame is welded on the outer wall of one side of the mounting sleeve, a threaded rod is threaded through the vertical arm of the U-shaped frame, a rotating sleeve is provided at one end of the threaded rod, and the other end of the threaded rod is clearance-fitted inside one of the positioning holes.

[0020] The utility model is further configured as follows: a second drive motor is fixedly connected to one side of the top of the shell through a second motor frame, the output shaft of the second drive motor is fixedly connected to one end of the second screw rod, and a second mounting seat is fixedly connected to the other side of the top of the shell, and the other end of the second screw rod is rotatably connected to the inside of the second mounting seat.

[0021] The utility model has the following beneficial effects:

[0022] The utility model arranges a feeding component, first places the material in the upper hopper, and starts the first drive motor, the output shaft of the first drive motor drives the first screw rod to rotate through the transmission action of the synchronous wheel and the synchronous belt, so that the first screw rod drives the first slider to move, and the first slider drives the upper hopper to perform linear reciprocating motion in the longitudinal direction through the L-shaped frame, so that the material in the upper hopper is evenly dispersed on the uppermost screen through the feed pipe, avoiding the accumulation of material in one place on the screen, facilitating the screening of the material, and improving the screening efficiency of the material.

[0023] The utility model provides an anti-clogging component, firstly connects one end of the telescopic hose located outside the shell to a high-pressure blower or a high-pressure water pump, provides high-pressure airflow or high-pressure water flow into the dredging pipe through the telescopic hose, then starts the second drive motor, the output shaft of the second drive motor drives the second screw rod to rotate, the second screw rod drives the moving plate to perform a linear reciprocating motion in the horizontal direction through the second slider, the moving plate drives the installation sleeve and the dredging pipe to perform a linear reciprocating motion in the horizontal direction through the connecting rod, and the high-pressure airflow or high-pressure water flow is transported to the screen through the dredging pipe and the nozzle, and the blocked part of the screen is automatically dredged by means of the impact force of the high-pressure airflow or high-pressure water flow, so that the blocked screen can be automatically dredged, and the screening of the material is convenient.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of a three-layer linear screen.

[0027] Figure 2 It is a front cross-sectional view of the housing of the utility model.

[0028] Figure 3 This is a structural disassembly diagram of the support assembly of the utility model.

[0029] Figure 4 It is a structural schematic diagram of the feeding assembly of the utility model.

[0030] Figure 5 This is a structural disassembly diagram of the installation frame of the utility model.

[0031] Figure 6It is a structural schematic diagram of the upper hopper of the utility model.

[0032] Figure 7 It is a structural schematic diagram of the first screw rod of the utility model.

[0033] Figure 8 It is a structural schematic diagram of the anti-blocking component of the utility model.

[0034] Fig. 9 It is a schematic diagram of the installation between the telescopic hose and the dredging pipe of the utility model.

[0035] Fig.10 It is a structural schematic diagram of the installation sleeve of the utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1-housing, 101-vibration motor, 102-screen, 103-discharging shell, 104-discharging pipe, 2-support assembly, 201-bottom plate, 202-support column, 202a-liquid inlet pipe, 202b-liquid inlet valve, 203-movable rod, 203a-piston plate, 203b-connecting plate, 203c-buffer spring, 3-feeding assembly, 301-installation frame, 301a-movable frame, 301b-dust cover, 301c-groove, 301d-bump, 302-loading hopper, 302a-feeding pipe, 302b-installation rod, 302c-fastening nut, 303-L-shaped frame, 303a-first slider, 304-first screw rod, 304a-first mounting seat, 304b-synchronous wheel, 304c-synchronous belt, 305-first drive motor, 305a-first motor frame, 4-anti-blocking component, 401-telescopic hose, 401a-rotating joint, 402-dredging pipe, 402a-sprinkler, 402b-positioning hole, 403-mounting sleeve, 403a-U-shaped frame, 403b-threaded rod, 403c-rotating sleeve, 403d-connecting rod, 404-movable plate, 405-second screw rod, 405a-second slider, 405b-second motor frame, 405c-second drive motor, 405d-second mounting seat. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0039] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, it is the first embodiment of the utility model, which provides a three-layer linear screen, including a shell 1, a top side of the shell 1 is provided with a feeding assembly 3, the feeding assembly 3 includes a mounting frame 301, a feeding hopper 302, an L-shaped frame 303 and a first screw rod 304, the L-shaped frame 303 and the feeding hopper 302 are driven by the first screw rod 304 to perform linear reciprocating motion, and the material is evenly transported to various places of the uppermost screen 102 through the feeding hopper 302, thereby solving the problem that the existing material is easily accumulated in one place when feeding.

[0040] Specifically, the installation frame 301 is fixedly connected to the top feed port of the housing 1, and the interior of the installation frame 301 is movably connected to a movable frame 301a in the longitudinal direction, and the interior of the movable frame 301a is fixedly connected to a feed pipe 302a, and the top of the feed pipe 302a is fixedly connected to an upper hopper 302, and both sides of the upper hopper 302 are fixedly connected to an L-shaped frame 303, and both sides of the outer wall of the installation frame 301 are rotatably connected to a first screw rod 304 through a first mounting seat 304a, and a first slider 303a is threadedly sleeved on the first screw rod 304, and the top of the first slider 303a is fixed Connected to the bottom of the horizontal support arm of the L-shaped frame 303, the installation frame 301 is used to movably install the upper hopper 302, the movable frame 301a is used to movably install the upper hopper 302 on the installation frame 301, the upper hopper 302 and the feed pipe 302a are used to feed materials into the interior of the shell 1, the L-shaped frame 303 is used to drive the upper hopper 302 to move, the first screw rod 304 and the first slider 303a are matched to drive the L-shaped frame 303 to move, and the first mounting seat 304a is used to install the first screw rod 304.

[0041] Furthermore, a vibration motor 101 is fixedly connected to the front end surface of the housing 1, a plurality of screens 102 are fixedly connected to the inside of the housing 1 at equal intervals from top to bottom, a plurality of discharge shells 103 are penetrated from top to bottom on the outer wall of one side of the housing 1 at equal intervals, a feed port of the discharge shell 103 is fixedly connected to one end of the screen 102, and a discharge pipe 104 is fixedly connected to the bottom of the discharge shell 103;

[0042] Support components 2 are arranged around the bottom of the shell 1. The support components 2 include a plurality of bottom plates 201 located around the bottom of the shell 1. Support columns 202 are welded on the upper surfaces of the bottom plates 201. The tops of the support columns 202 are movably connected through movable rods 203. A piston plate 203a is welded on one end of the movable rod 203 located on the inner side of the support column 202. A connecting plate 203b is welded on one end of the movable rod 203 located on the outer side of the support column 202. The upper surfaces of the connecting plates 203b are respectively fixedly connected to the bottom of the shell 1. A buffer spring 203c is sleeved on the outer side of the movable rod 203. The two ends of the buffer spring 203c are respectively fixedly connected to the top of the support column 202 and the lower surface of the connecting plate 203b.

[0043] A liquid inlet pipe 202a is fixedly connected to the lower part of the outer wall of one side of the support column 202, and a liquid inlet valve 202b is fixedly connected to the end of the liquid inlet pipe 202a away from the support column 202;

[0044] Dust covers 301b are fixedly connected to the front and rear end surfaces of the movable frame 301a, and one end of the dust cover 301b away from the movable frame 301a is fixedly connected to the front and rear end surfaces of the inner side of the installation frame 301. Grooves 301c are provided on the inner walls of both sides of the installation frame 301, and convex blocks 301d are movably connected inside the grooves 301c. One end of the convex blocks 301d located outside the grooves 301c is welded to the outer walls of both sides of the movable frame 301a.

[0045] Mounting rods 302b are welded to the upper and lower parts of the outer walls on both sides of the upper hopper 302. One end of the mounting rod 302b away from the upper hopper 302 passes through the vertical arm of the L-shaped frame 303 and is threadedly sleeved with a fastening nut 302c.

[0046] The first drive motor 305 is fixedly connected to the front end surface of the mounting frame 301 via a first motor frame 305a. The output shaft of the first drive motor 305 and the front end of the first screw rod 304 are both sleeved with synchronous wheels 304b, and the synchronous wheels 304b are connected through a synchronous belt 304c.

[0047] The operation process of this embodiment is as follows: first, the material is placed in the upper hopper 302, and the first drive motor 305 is started. The output shaft of the first drive motor 305 drives the first screw rod 304 to rotate through the transmission action of the synchronous wheel 304b and the synchronous belt 304c, so that the first screw rod 304 drives the first slider 303a to move, and the first slider 303a drives the upper hopper 302 to perform a longitudinal linear reciprocating motion through the L-shaped frame 303, so that the material in the upper hopper 302 is evenly dispersed on the uppermost screen 102 through the feed pipe 302a, and then the vibration motor 101 is started. The vibration motor 101 drives the outer shell 1 and the screen 102 inside it to vibrate, and the material is screened through the screen 102. The screened material is discharged to the outside of the outer shell 1 through the discharge shell 103 and the discharge pipe 104, thereby realizing the screening of the material. Example 2

[0048] See also Figure 1 , Figure 8 , Fig. 9 and Fig.10 As shown, it is the second embodiment of the utility model, which is based on the previous embodiment, but is different from the previous embodiment in that an anti-blocking component 4 is also arranged on the upper inner side of the shell 1, and the anti-blocking component 4 includes a telescopic hose 401, a dredging pipe 402, a mounting sleeve 403, a movable plate 404 and a second screw rod 405. The mounting sleeve 403 and the dredging pipe 402 are driven by the second screw rod 405 and the movable plate 404 to perform a lateral linear reciprocating motion inside the shell 1, and a high-pressure airflow or a high-pressure water flow is transported to the screen 102 through the dredging pipe 402, and the screen 102 is automatically dredged by means of the high-pressure airflow or the high-pressure water flow, thereby solving the existing problem that it is inconvenient to avoid clogging of the screen 102.

[0049] Specifically, the telescopic hose 401 passes through the upper part of the outer wall of one side of the shell 1, and one end of the telescopic hose 401 located on the inner side of the shell 1 is fixedly connected to the dredging pipe 402 through a rotating joint 401a, and a plurality of nozzles 402a are fixedly connected to the dredging pipe 402 along its axial direction at equal intervals, and a mounting sleeve 403 is sleeved on the outer side of the end of the dredging pipe 402 away from the rotating joint 401a, and a connecting rod 403d is welded on the top of the mounting sleeve 403, and the top of the connecting rod 403d movably passes through the top of the shell 1 and is fixedly connected to the moving plate 404, and the top of the shell 1 is rotatably connected to the second screw rod 405, and a second slider 405a is threadedly sleeved on the second screw rod 405, and the top of the second slider 405a is welded to the center position of the lower surface of the moving plate 404, and one end of the telescopic hose 401 located on the outer side of the shell 1 is externally connected to the A high-pressure blower or a high-pressure water pump provides high-pressure airflow or high-pressure water flow to the dredging pipe 402 through the telescopic hose 401. The rotary joint 401a is used to connect the telescopic hose 401 and the dredging pipe 402. The dredging pipe 402 and the nozzle 402a are used to transport the high-pressure airflow or high-pressure water flow to the screen 102, thereby dredging the screen 102. The mounting sleeve 403 is used to movably mount the dredging pipe 402 inside the outer shell 1. The connecting rod 403d is used to connect the mounting sleeve 403 and the movable plate 404. The movable plate 404 is used to drive the mounting sleeve 403 to perform a linear reciprocating motion in the lateral direction inside the outer shell 1. The second screw rod 405 and the second slider 405a are used to drive the movable plate 404 to perform a linear reciprocating motion in the lateral direction.

[0050] A plurality of positioning holes 402b are provided at equal intervals along the circumference of the dredging pipe 402 at one end away from the rotating joint 401a. A U-shaped frame 403a is welded on the outer wall of one side of the mounting sleeve 403. A threaded rod 403b is threadedly penetrated on the vertical arm of the U-shaped frame 403a. A rotating sleeve 403c is sleeved on one end of the threaded rod 403b. The other end of the threaded rod 403b is loosely fitted in one of the positioning holes 402b.

[0051] A second drive motor 405c is fixedly connected to one side of the top of the outer shell 1 through a second motor frame 405b, and the output shaft of the second drive motor 405c is fixedly connected to one end of the second screw rod 405. A second mounting seat 405d is fixedly connected to the other side of the top of the outer shell 1, and the other end of the second screw rod 405 is rotatably connected to the inside of the second mounting seat 405d.

[0052] The rest of the structure is the same as that of Example 1.

[0053] The operation process of this embodiment is as follows: first, the end of the telescopic hose 401 located outside the shell 1 is connected to an external high-pressure blower or a high-pressure water pump, and a high-pressure airflow or high-pressure water flow is provided to the dredging pipe 402 through the telescopic hose 401, and then the second drive motor 405c is started, and the output shaft of the second drive motor 405c drives the second screw rod 405 to rotate, and the second screw rod 405 drives the movable plate 404 to perform a linear reciprocating motion in the horizontal direction through the second slider 405a, and the movable plate 404 drives the mounting sleeve 403 and the dredging pipe 402 to perform a linear reciprocating motion in the horizontal direction through the connecting rod 403d, and the high-pressure airflow or high-pressure water flow is delivered to the screen 102 through the dredging pipe 402 and the nozzle 402a, and the blocked part of the screen 102 is automatically dredged with the impact force of the high-pressure airflow or high-pressure water flow.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A three-layer linear screen, comprising a housing (1), characterized in that: A feeding component (3) is provided on one side of the top of the shell (1), and an anti-blocking component (4) is also provided on the upper inner side of the shell (1); The feeding assembly (3) comprises a mounting frame (301) fixedly connected to a feeding port at the top of the housing (1), and a movable frame (301a) is movably connected to the inside of the mounting frame (301) along the longitudinal direction, a feeding pipe (302a) is fixedly connected to the inside of the movable frame (301a), and the top of the feeding pipe (302a) is fixedly connected to a feeding hopper (302), both side outer walls of the feeding hopper (302) are fixedly connected to an L-shaped frame (303), and both side outer walls of the mounting frame (301) are rotatably connected to a first screw rod (304) via a first mounting seat (304a), a first slider (303a) is threadedly sleeved on the first screw rod (304), and the top of the first slider (303a) is fixedly connected to the bottom of a horizontal support arm of the L-shaped frame (303); The anti-clogging component (4) comprises a telescopic hose (401) penetrating above the outer wall of one side of the housing (1), and one end of the telescopic hose (401) located on the inner side of the housing (1) is fixedly connected to a dredging pipe (402) via a rotating joint (401a), and the dredging pipe (402) is fixedly connected to a plurality of nozzles (402a) at equal intervals along its axial direction, and a mounting sleeve (403) is sleeved on the outer side of one end of the dredging pipe (402) away from the rotating joint (401a), and a connecting rod (403d) is welded to the top of the mounting sleeve (403), and the top end of the connecting rod (403d) movably penetrates the top of the housing (1) and is fixedly connected to a movable plate (404), and the top of the housing (1) is rotatably connected to a second screw rod (405), and a second slider (405a) is threadedly sleeved on the second screw rod (405), and the top of the second slider (405a) is welded to the center position of the lower surface of the movable plate (404).

2. A three-layer linear screen according to claim 1, characterized in that: A vibration motor (101) is fixedly connected to the front end surface of the shell (1), and a plurality of screens (102) are fixedly connected to the inside of the shell (1) at equal intervals from top to bottom. A plurality of discharge shells (103) are passed through an outer wall of one side of the shell (1) at equal intervals from top to bottom, and a feed port of the discharge shell (103) is fixedly connected to one end of the screen (102), and a discharge pipe (104) is fixedly connected to the bottom of each of the discharge shells (103).

3. A three-layer linear screen according to claim 2, characterized in that: Support components (2) are arranged around the bottom of the shell (1), and the support components (2) include a plurality of bottom plates (201) located around the bottom of the shell (1), the upper surfaces of the bottom plates (201) are welded with support columns (202), and the top ends of the support columns (202) movably penetrate the movable rod (203), the movable rod (203) is welded with a piston plate (203a) at one end located inside the support column (202), and the movable rod (203) is welded with a connecting plate (203b) at one end located outside the support column (202), the upper surfaces of the connecting plates (203b) are respectively fixedly connected to the bottom of the shell (1), and the outer side of the movable rod (203) is sleeved with a buffer spring (203c), and the two ends of the buffer spring (203c) are respectively fixedly connected to the top end of the support column (202) and the lower surface of the connecting plate (203b).

4. A three-layer linear screen according to claim 3, characterized in that: A liquid inlet pipe (202a) is fixedly connected to the lower part of the outer wall of one side of the support column (202), and a liquid inlet valve (202b) is fixedly connected to one end of the liquid inlet pipe (202a) away from the support column (202).

5. A three-layer linear screen according to claim 1, characterized in that: Dust covers (301b) are fixedly connected to the front and rear end surfaces of the movable frame (301a), and one end of the dust cover (301b) away from the movable frame (301a) is fixedly connected to the front and rear end surfaces inside the installation frame (301), grooves (301c) are provided on the inner walls on both sides of the installation frame (301), and the inside of the grooves (301c) is movably connected to protrusions (301d), and one end of the protrusions (301d) located outside the grooves (301c) is respectively welded to the outer walls on both sides of the movable frame (301a).

6. A three-layer linear screen according to claim 1, characterized in that: Mounting rods (302b) are welded to the upper and lower parts of the outer walls on both sides of the upper hopper (302), and one end of the mounting rod (302b) away from the upper hopper (302) passes through the vertical arm of the L-shaped frame (303) and is threadedly sleeved with a fastening nut (302c).

7. A three-layer linear screen according to claim 1, characterized in that: A first drive motor (305) is fixedly connected to the front end surface of the installation frame (301) via a first motor frame (305a), and the output shaft of the first drive motor (305) and the front end of the first screw rod (304) are both sleeved with synchronous wheels (304b), and the synchronous wheels (304b) are connected in transmission via a synchronous belt (304c).

8. A three-layer linear screen according to claim 1, characterized in that: The end of the dredging pipe (402) away from the rotary joint (401a) is provided with a plurality of positioning holes (402b) at equal intervals along its circumference, and a U-shaped frame (403a) is welded on an outer wall of one side of the mounting sleeve (403), a threaded rod (403b) is threadedly penetrated on a vertical support arm of the U-shaped frame (403a), and a rotating sleeve (403c) is sleeved on one end of the threaded rod (403b), and the other end of the threaded rod (403b) is loosely fitted inside one of the positioning holes (402b).

9. A three-layer linear screen according to claim 1, characterized in that: A second drive motor (405c) is fixedly connected to one side of the top of the housing (1) via a second motor frame (405b), and an output shaft of the second drive motor (405c) is fixedly connected to one end of a second screw rod (405); a second mounting seat (405d) is fixedly connected to the other side of the top of the housing (1), and the other end of the second screw rod (405) is rotatably connected to the inside of the second mounting seat (405d).

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